JavaHL: Fix another reference lifetime issue, this time when returning and converting errors.
JavaHL: Fix another reference lifetime issue, this time when returning and
converting errors.

* subversion/bindings/javahl/native/JNIUtil.cpp
  (handleSVNError): When appending the C stack trace to the Java one, manually
    create and delete the Array proxy object, to avoid a double-deref as
    a result of the JNI stack frame handling.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1176416 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion